Lemma
MediumDigits
AQuA-RAT train #75739 · Number Theory · Digits

How many numbers can be formed from 1, 2, 3, 4, 5…

How many numbers can be formed from 1, 2, 3, 4, 5 (without repetition), when the digit at the unit’s place must be greater than that in the ten’s place?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #75739

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